micro/proxy/http/http_test.go

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package http
import (
"context"
"fmt"
"net"
"net/http"
"sync"
"testing"
"github.com/micro/go-micro/v3/client"
"github.com/micro/go-micro/v3/registry/memory"
"github.com/micro/go-micro/v3/server"
"github.com/micro/go-micro/v3/service"
"github.com/micro/go-micro/v3/service/mucp"
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)
type testHandler struct{}
func (t *testHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`{"hello": "world"}`))
}
func TestHTTPProxy(t *testing.T) {
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c, err := net.Listen("tcp", "localhost:0")
if err != nil {
t.Fatal(err)
}
defer c.Close()
addr := c.Addr().String()
url := fmt.Sprintf("http://%s", addr)
testCases := []struct {
// http endpoint to call e.g /foo/bar
httpEp string
// rpc endpoint called e.g Foo.Bar
rpcEp string
// should be an error
err bool
}{
{"/", "Foo.Bar", false},
{"/", "Foo.Baz", false},
{"/helloworld", "Hello.World", true},
}
// handler
http.Handle("/", new(testHandler))
// new proxy
p := NewSingleHostProxy(url)
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ctx, cancel := context.WithCancel(context.Background())
defer cancel()
var wg sync.WaitGroup
wg.Add(1)
// new micro service
service := mucp.NewService(
service.Context(ctx),
service.Name("foobar"),
service.Registry(memory.NewRegistry()),
service.AfterStart(func() error {
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wg.Done()
return nil
}),
)
// set router
service.Server().Init(
server.WithRouter(p),
)
// run service
// server
go http.Serve(c, nil)
go service.Run()
// wait till service is started
wg.Wait()
for _, test := range testCases {
req := service.Client().NewRequest("foobar", test.rpcEp, map[string]string{"foo": "bar"}, client.WithContentType("application/json"))
var rsp map[string]string
err := service.Client().Call(ctx, req, &rsp)
if err != nil && test.err == false {
t.Fatal(err)
}
if v := rsp["hello"]; v != "world" {
t.Fatalf("Expected hello world got %s from %s", v, test.rpcEp)
}
}
}